Fastening-inserting machine



Oct. 20,1925- J. W. CO SGROV E FASTENING INSERTING MACHINE Filed M r h 9. 1922 2 Sheets-Sheet 1 Oct. 20, 1925- 1,557,561 J. w. COSGROVE msmm'us msmwme momma I Filed Mayche, 1922 2 Sheets-Sheet 2 Patented Oct. 20, 1925.

I UNITED STATES,

PATENT OFFICE.

JOHN W. COSGROVE, OF MEDFORD, MASSACHUSETTS, ASSIGNOR TO UNITED "SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

FASTEN IN G-INSERTIN G MACHINE.

Application filed March a, 1922. Serial No. 542,289.

To all whom it may concern Be it known that I, JOHN W. (losenovn, a citizen of the United States, residing at Medford, in the county of Middlesex and State of Massachusetts, have invented cer tain Improvements in Fasteninglnserting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to fastening inserting machines and more particularly to machines of this class which have parts relatively movable to clamp the work successive- 1y at the points of fastening insertion during the insertion of the fastenings.

As heretofore constructed, machines of the class describe-d commonly comprise a work supporting surface arranged to cooperate with a member, for example, in one type of such machines, the nozzle of a fastening inserting mechanism, in the application at the-point of fastening insertion of relatively great pressure which constantly increases up to the termination of the fastening inserting operation, the purpose being to compress the work and insure perfect setting of the fastening. 111 many of these machines the work support or clinching anvil is so oper-. ated as to clamp the work at the point of f astening insertion in a manner comparable to a hammer blow delivered just prior to the ejection of the fastening from the nozzle of the fastening inserting mechanism. Formany kinds of work these machines are eflicient and satisfactory to a high degree. It will be apparent, however, that with unusually compressible or fragile material such machines as those described would be likely to cause undesirable compression marks or even serious damage to the material at the point of fastening insertion. For instance, in the operation of attaching fur to the edges of the uppers of felt or leather footwear, machines of the type just described would be likely to cut through or otherwise seriously damage the relatively tender skin of the fur.

It is an object of this invention to provide improved means for setting fastenings in materials which are likely to be damaged if the operation be not carried out with relatively light pressure at the point of fastening insertion.

. In one aspect the invention resides in an mproved means for supporting and clampmg the work at the point of fastening insertion so constructed and arranged as to sertion of a fastening in an organization wherein the work support is movable from a work receiving to a work clamping position through the operation of springmeans.

In another aspect the invention resides in a single manually operable member for controlling the means for starting the machine and also the means for clamping the work, the organization being such that the work clamping means is locked in its clamping position priorto effective operation of the inserting mechanism so as to hold the work clamping means. rigidly against retraction during the insertion of a fastening.

Other features of construction and novel combinations of parts will be described in the detailed specification and pointed out in the appended claims.

In the drawings Fig. 1 is a view in side elevation of one embodiment of the invention.

Fig. 2 is a detail View showing the work clamped between the anvil and nozzle of the stapling mechanism;

Fig. 3 is an enlarged view in side elevation of the anvil operating means;

Fig. 4 is a front View of the machine with, parts broken away to show the anvil operating means; and I Fig. 5 is a detail View of portions of the anvil operating means shown in Fig.3.

Mounted in the overhanging portion 6 of the frame 8 is a stapling head 10 which is preferably, although notnecessarily, of the type shown in Patent No. 1,011,592, granted Dec. 12, 1911, on the application of WV. J. Drey. In any case the stapling mechanism will comprise a nozzle 12 through which fastenings are driven after having been formed from relatively thin wire drawn from a reelsuch as that shown at ltcarried at the end of the bracket arm 16. For details of the fastening forming and driving devices, reference should be had to the patent referred to above.

Power for driving the parts of the stapling mechanismis furnished by the shaft 20 which carries a power pulley 22 arranged to be clutched to the shaft at the will of the operator by any suitable clutch mechanism which may be of the Horton clutch type. A clutch controlling arm 24. is mounted upon a rock shaft 26 and operates'normally to hold the clutch in its inoperative condition, the roller cage 28 of' the clutch being provided with a stop portion or shoulder 30 which normally engages a spring cushioned dog 32 pivoted between the ears 34 upon the end'of the arm 24. lVhen the shaft 26 is turned in a counter clockwise direction in Fig. '1, the dog 32 is lifted out of engagement with the stop or shoulder 30 and the roller cage 28 is rotated by a spring (not shown) in the usual manner to bring the rollers of the Horton clutch into clutching position between a clutch member fixed on the shaft 20' and a cylindrical surface upon theinside of the pulley 22. A spring 36 tends to maintain the arm as normally in its clutch releasing position." For rotating the clutch controlling arm 2 in a direction away from theclutch there is provided manually controlled means which, in the illustrative construction, comprisesa treadle a0 pivoted at 42 upon a'support 44 secured to the floor or to 'a portion of themachine frame, the treadle having a tread portion 41. Connect ed to the far end of the treadle lever 40 is a rod 46 which may be extensible in any well known manner, as for instance by a double collar 48 through which pass the upper and lower parts of the rod' li'i, means being provided such as set screws for securing the collar and the rod parts in adjusted relation to each other. At its upper end the rod 46 is pivoted at 52 to one end of a lever arm 54 which is keyed on itsother end to a shaft 56 supported in bearings in the frame of the machine extending upwardly from the shaft 56 is a second lever arm 58 which is conveniently bifurcated as most 60, the bifurcated portion of the armfiS being provided with awpin or bolt vhich is adapted to engage with the hookedend 64. of the link 60. As illustrated'the rank (30 is maintained in engagement with. the pin 62 by means of a spring '66. At the end opposite to its hooked end the linl: '60 is piv oted at 68 to an arm 70 carried by or secured to the shaft 26. Vi hen the treadle lever 40 has its tread portion il depressed the upper end of the lever arm isfinoved to the right in Figs. 1 and 3, the pin 62 sliding along the upper edge surface of the link 60 until it engages with the hooked end Gi of the link, thus providing a lost motion connection beclearly shown in Fig. i to straddle one end of alink tween these parts which has a purpose that will be pointed out later in this specification. Upon engagement of the pin 62 with the hook 64- during continued movement of the arm 58 the link 60 is, carried to the right, thus rocking the shaft 26 and withdrawing the lever arm 2% from contact with the stop 30 on the cage 280i the clutch, whereupon the clutch is permitted to operate to connect the power pulley 22 with the shaft of the machine.

For supporting the work at the point of' fastening insertion there is provided a member which is preferably also an anvil member having a clinching'cavity at its end in alignment with the line of fastenings driven through the nozzle 12. As shown, the anvil 80 is a separate member secured in the end of a support 82 which is conveniently of the shape shown in order that shoes or slippers or similarly shaped articles may be readily positioned with the forward end of the anvil entering the article to be operated on. In the illustrative construction the support 82 has a straight portion or post 84 which is slidable vertically in a bearing 86 fixedly secured to the frame portion of the stapling head 10, there being a removable cover portion 88 whereby the assembly of the parts may be made in an easy and expeditious mannerl Preferably the upper part of the straight portion 84.01 the support 82 is reduced in diameter and is surrounded by a spring 94: (Fig. 5), washers 96 and 98 being provided at each end of the spring slidable on the post 84. Fixed to the shaft 56 already described is an arm 100 (Fig. 5) which has a bifurcated end 102 arrangedto embrace the upper end of the post 84 and which has rounded end portions 10% upon which rests the lower washer 98, the latter being constantly kept in contact with the end of the lever 100 through pressure of the spring 94. hen the lever arm. 100 is rocked in a clockwise direction the washer 98 is moved upwardly, compressing the spring 94 and, through this yielding connection. lifting the of the spring 94 being preferably such that the clamping pressure upon the work may be relatively light for certain classes of work, as for instance in stapling fur around the top edge portions of felt slippers, as indicated in 2 of the drawings, this being one of the purposes for which the machine is especially adapted. \Vhile the spring 94 may be depended upon to supply sufficient clamping pressure upon the work, there is preferably provided a second spring 110 secured to the upper end of the post 84 above the spring 94 and at its other end to a hook 112 upon a stationary part of the frame. This spring 110 serves also as a means tending to maintain the post 84 in a vertical position so that it will slide readily through its bearing 86. Without the spring 110 there is a tendency of the upper end of the bar 84 to move toward the right in Fig. 5 because of friction between the ends 104 of the lifting lever 100 and the contracted surfaces on the washer 98.

Vhile it is en'iinently desirable that the I work in certain cases should be clamped against the nozzle of the fastening inserting mechanism with, such a pressure that no damage to the work will ensue, it is both necessary and desirable that the support should furnish sufficient resistance to the action of the fastening driving parts to ensure that the fastening will be securely set in the work. Accordingly, means is provided for locking the anvil in the position to which it has been moved by the operation of the spring means, the said locking means comprising, in the illustrative construction, a pivoted member 116 having a passageway which fits closely upon the straight portion or post 84 of the anvil support 82. Con-. veniently, the bearing 86 is provided with a couple of slots 118 for slidably receiving the flat ends 120 of a cylindrical bearing pin 121 which is rotatable within an enlarged bearing portion of the locking member 116, the arrangement being such that the member 116 pivots on the pin 121 and is capableof a slight lateral movement due to the slidable mounting of the flat ends 120 of the pin 121 in the slots 118 of the box or bearing 86. In the free end of the. member 116 there is mounted a bearing pin 122 secured adjustably in place by a lock nut 124, the arrangement being such that the lever arm 100 when in its lowermost position of rest normally contacts with the bearing pin 122 to hold the main or ring portion 130 of the member 116 in a plane perpendicular to the long axis of the post 84 so that thebar may slide readily through the passage in the ring 130. As soon. however, as the lever memher 100 starts upwardly upon depressing the treadle lever 40, the member 116 is freed from the control of the said lever memher 100 so that the ring 130 may move to another position other than the horizontal, means being provided for ensuring that the ring will take this other position, such means being shown as a spring pressed plunger 140 mounted for sliding movement in the bearing 86 under the action of-the spring 142, the tension of which may be adjusted through proper manipulation of a screw threaded member 144. The tension of the spring 142 is such that upward sliding movement of the bar 84 may readily take place even after the lever 100 is separated from the bearing pin 122, because friction between the ring 130 and the post 84 tends to carry the ring back into the horizontal plane so that the bar can slide readily through the opening in the ring. Any movement of the post 84 in a downward direction because of friction of the parts Ijust referred to will aid thespring 142 in moving the ring 130 to clamping position with respect to the post 84 so that the ring acts as an absolute lock to hold the post 84 against downward movement. The post 84 and, therefore, the anvil 80, will remain locked against downward movement untilthe lever arm 100 returns to its initial position upon release of the treadle. l Vhen this takes place the contact of the lever 100 with the bearing pin 122 immediately returns the lock ring 130 to the horizontal plane, in which position it no longer has a locking action on the post. Thus, the anvil with its support immediately drops to the work receiving position illustrated in Fig. 1 of the drawings. Since the locking means for. the Work support 80 is constructed to be separate from the work support lifting means, the looking means cannot be utilized to place additional clamping pressure on the Work as in the prior constructions with which applicant is acquainted.

For insuring that the ring 130 will act officiently as a clutch or look to grip the bar 84, its inner ring portion has beveled oft" portions, the bevels being in different planes and pointing in opposite directions, as indicated in Fig. 5 of the drawings. By reason of the bevels, the surface contact with the post 84 is reduced and a slight turning movement of the ring 130 relatively to the post 84 is permitted by which the latter is firmly gripped.

111 operating with the machine the work is introduced over the anvil member 80 and positioned properly for the insertion of a staple. Upon depressing the treadle lever 40, the lever arm 100 is moved upwardly to elevate the anvil yieldingly through the hook end 64 of the link 60 by which movement of the treadle lever is transmitted to the clutch controlling lever 24. With the work supported on the anvil and the latter locked against downward movement, the fastening is driven and securely set into the work. Upon release of thetreadle the parts return to their normal position and the work may be removed or shifted preliminary to the insertion of another fastening.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a machine of the class described, fastening inserting mechanism, a work support, means operative through the work support yieldingly to press the work in clamping relation to the inserting mechanism, and means for locking the work support against retractive movement only, the

locking means serving to hold the work support rigidly against retraction while a fastening is being inserted into the work.

2. In a machine of the class described, fastening inserting mechanism comprising a nozzle through which fastenings are driven, a support for work "earns operative through the work support ior yieldingly pressing work on the support against the end of the nozzle and locking means for preventing retraction of the work support while permitting movement thereof in work clamping direction.

3. In a machine of the class described, fastening inserting mechanism comprising a stationary nozzle through which fastenings are driven, a member for yieldingly pressing the work against the nozzle, and neans for locking the member against retraction only, the locking means being op erative to hold the memberrigidly against retraction during insertion of a fastening.

st. In a machine of the class described, fastening inserting mechanism comprising anozzle through which fastenings are driven, an anvil for co-operating with the inserting mechanism for the fastenings in the work, a manually operable men'lber. for controlling both the inserting mechanism and the anvil, spring means for moving the anvil yieldingly toward the nozzle to clamp the work it-h a relatively light pressure, and means for locking the anvil in its clamping position prior to the insertion of a fastenin the construction being such that the ivil is rigidly supported during the insertion of a fastening.

In a machine of the character described, fastening inserting mechanismcomprising a nozzle through which fastenings are driven, an anvil movable toward and from the nozzle. meansfor moving the anvil to press the work yieldingly against the nozzle, means for starting the fastening inserting mechanism in operation, and means controlled directly by the starting means for locking the anvil against retraction and in the position to which it has been moved against retraction, and

by the first-mentioned means, the locking means being independent of the moving means for the anvil so that the locking means is operative only -to maintain pres sure applied bythe moving means.

6. In a machine of the character described, fastening inserting n'iechanisn'i'j comprising a nozzle through which fastenings may be driven into work properly presented thereto, an anvil movable toward and from the nozzle, means for causing the anvil to press the work yieldingly against the nozzle, starting means, means for locking the anvil against movement away from the extreme clamping position to which it has been moved by the tirst-n'ientioned means, and a lost motion connection between the starting means and the anvil locking means whereby the anvil is locked prior to the insertion of a fastening by said mechanism, the anvil and the locking means being relatively movable at all times in one direction so that the locking means cannot be used to place the work under greater pressure than that caused by the first-mentioned means.

7. In a machine of the character described, fastening inserting mechanism comprising a nozzle through which fastenings are driven, an anvil for pressing the work yieldingly against the'nozzle, a supporting member for the anvil, starting means for the machine comprising a treadle, spring means operated by force applied from the treadle for lifting the anvil support to cause the latter to press the work yieldingly against the nozzle, and a lock for the anvil support arranged to be released by the starting means in such manner as to become operative as a locking means before the insertion of a fastening into the work.

8. In a machine of the character described, fasiening inserting mechanism comprising a nozzle through which fastenings are driven, a member for pressing the work yieldingly against the nozzle and operating means therefor, starting means for the inserting mechanism, a lock for engaging with the pressing inemher to lock the same a single manually operable member for controlling the starting means and the lock, the latter and the operating means for the work pressing member being independent of each other I so that no additional pressure can be placed machine in operation, a treadle, a lost-motion connection between the treadle and the clutch controlling lever for moving the lat-- ter to initiate operation of the machine, a

spring for supporting the anvil, connections scribed, fastening inserting mechanism comprising a nozzlethrough which fasteningsare driven, starting ineans comprising a clutch lever for controlling the operations of the said mechanism, an anvil for clinching the fastenings, means for moving the anvil to clamp the work against the nozzle a lock for engagement with the anvil and operative prior to the insertion of each fastening, for locking the anvil against retraction and a lost motion connection between the lock and the clutch lever whereby the lock becomes operative prior to the inscrtion of a fastening.

11. In a machine of the character de scribed, fastening inserting mechanism comprising a nozzle through which fastenings are driven, an anvil movable toward and from the nozzle, a spring for engagement with the anvil for moving the anvil to clamp the work yieldingly against the nozzle, a lock for engagement with the anvil to lock the latter against movement to compress the spring, the construction being such that the anvil may be moved at all times toward clamping position, and means for returning the lock to inoperative position.

12. Ina machine of the class described, a fastening inserting mechanism comprising a nozzle through which fastenings are driven, an anvil movable toward and from the nozzle, a supporting member for the anvil, a spring for moving the anvil yieldingly to clamp the work against the nozzle, a pivoted lock member having an opening through which the anvil support passes, a spring for moving the lock to operative position, starting means for the machine, and connections between the starting means and the lock for moving the latter to inoperative position.

13. In a machine of the character de scribed, a fastening inserting mechanism comprising a nozzle through which fastenings' are driven, an anvil movable toward and from the nozzle, a spring for causing the anvil yieldingly to clamp work against the nozzle, a support for the anvil, a lock having an opening therein through which the anvil support passes, a spring for moving the lock to operative position, the construction and arrangement being such that the anvil support may move in work clamp:

ing direction with the lock in operative position, starting means for the machine, and connections from the starting means to the lock for moving the later to inoperative position following the insertion of the fastening.

- 14. In a machine of the character described, fastening inserting means comprising a nozzle through which fastenings are driven, an anvil movable toward and from the nozzle, a support for the anvil, a 'bear ing for slidably receiving the anvil support, a spring for moving the anvil support in a direction to cause clamping of the work by the anvil, a lock pivoted in the bearing and having an opening through which the anvil support slides, and a spring for moving the look toward operative position, the construction and arrangement being such that the spring will yield to permit movement of the anvil support in a direction to cause clamping of the work while at the same time being effective to hold the lock in such position as to prevent retraction of the anvil. during a fastening inserting operation.

15. In a machine of the class described, a fastening inserting mechanism comprising a nozzle through which fastenings are driven, a work support movable toward and from the nozzle and comprising a post, means for moving the support to clamp the work against the nozzle, a pivoted lock member having an opening through which the post passes, means for moving the look about its pivot point to cause it to grip the post, starting means for the machine, and connections between the starting means and the lock for moving the latter to inoperative position.

16. In a machine of the character de scribed, a fastening inserting mechanism comprising nozzle through which fastenings are driven, a work support movable toward and from the nozzle and comprising a post, means for causing the support to clamp the work against the nozzle, a lock having an opening therein through which the post passes, a spring for moving the lock to operative position, the construction and arrangement being such that the support may move at all times with relation to the lock in the work clamping direction, starting means for the machine, and connections from the starting means to the lock for moving the latter to inoperative position following the insertion of the fastening.

17. In a machine of the character described, fastening inserting means comprising a nozzle through which fastenings are driven, a worksupport movable toward and from the nozzle, and comprising a post, a bearing for slidably receiving the post, a lock pivoted in the bearing and. having an opening through which the post slides, and

a spring for moving the look toward opera tive position, the construction and arrangement being such that the spring will yield to permit movement ofthe Work support in a direction to cause clamping of the Work While at the same time being effective to hold the lock in such position as to prevent retraction of the support during a fastening inserting operation.

18. In a machine of the character described, an abutment and a work support normally spaced relatively to each other in work receiving and'wo'rk feeding position and relatively movable to engage work on 15 the support with a clamping pressure, spring means for causing such relative approaching movement, means for locking one of the Work engaging members (the support and the abutment) against retraction relatively to the other member, the locking means being independent of the means for causing approaching movement of the members, and means for rendering the locking means inoperative thereby initiatingreturn of the work engaging members to work receiving position.

In testimony whereof. I have signed my name to this specification.

JOHN W. OOSGROVE. 

